1201232213800 has 48 divisors (see below), whose sum is σ = 2801787934140. Its totient is φ = 478957739520.

The previous prime is 1201232213789. The next prime is 1201232213801. The reversal of 1201232213800 is 83122321021.

It can be written as a sum of positive squares in 6 ways, for example, as 12395259556 + 1188836954244 = 111334^2 + 1090338^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1201232213801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9531907 + ... + 9657106.

Almost surely, 2^{1201232213800} is an apocalyptic number.

1201232213800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201232213800 is an abundant number, since it is smaller than the sum of its proper divisors (1600555720340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201232213800 is a wasteful number, since it uses less digits than its factorization.

1201232213800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19189342 (or 19189333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1201232213800 its reverse (83122321021), we get a palindrome (1284354534821).

The spelling of 1201232213800 in words is "one trillion, two hundred one billion, two hundred thirty-two million, two hundred thirteen thousand, eight hundred".